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The only place I've seen this is windows world where /arg and -arg are the same thing. Don't ask me how this came about.


IIRC, it's up to the application whether they handle /arg and -arg forms. They might just as well not support the latter.


DOS, where /arg was the way


They originally used - but IBM wanted /


Which it got from CP/M, which borrowed the idiom from VMS.




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